[PATCH v2 1/2] dt-bindings: usb: usb251xb: add documentation for data lane swapping
From: Marco Felsch <hidden>
Date: 2019-01-15 11:50:17
Also in:
linux-usb
Subsystem:
open firmware and flattened device tree bindings, the rest, usb subsystem · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Greg Kroah-Hartman
Add optional binding to allow USB differential-pair (D+/D-) data lane swapping. The swapping can be specified for each port separately, default is no swapping. Signed-off-by: Marco Felsch <redacted> --- Changes: v2: - rename property s/sw-dx-lanes-ports/swap-dx-lanes Documentation/devicetree/bindings/usb/usb251xb.txt | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/usb/usb251xb.txt b/Documentation/devicetree/bindings/usb/usb251xb.txt
index 168ff819e827..17915f64b8ee 100644
--- a/Documentation/devicetree/bindings/usb/usb251xb.txt
+++ b/Documentation/devicetree/bindings/usb/usb251xb.txt@@ -64,6 +64,8 @@ Optional properties : - power-on-time-ms : Specifies the time it takes from the time the host initiates the power-on sequence to a port until the port has adequate power. The value is given in ms in a 0 - 510 range (default is 100ms). + - swap-dx-lanes : Specifies the ports which will swap the differential-pair + (D+/D-), default is not-swapped. Examples: usb2512b@2c {
@@ -81,4 +83,6 @@ Examples: manufacturer = "Foo"; product = "Foo-Bar"; serial = "1234567890A"; + /* correct misplaced usb connectors on port 1,2 */ + swap-dx-lanes = <1 2>; };
--
2.20.1